Question

What are the sum of the roots x2+4x-5=0

Answer 1

Answer:

-4

Step-by-step explanation:

==: x² + 4x - 5 = 0

==: x² + 5x - x - 5 = 0

==: x (x + 5) - 1 (x + 5) = 0

==: (x + 5) (x - 1) = 0

Zeroes = -5 and 1

Sum = -5 + 1 = -4

          OR

==: x² + 4x - 5 = 0

Sum of zeroes = -b/a

                         = -4

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Answer 2

Answer:

What are the sum of the roots x2+4x-5=0.

Solution:

Know that, the $\[a{x^2} + bx + c = 0\]$ is a quadratic equation then,

Sum of the roots=$\[ = \frac{{ - b}}{a}\]$

Therefore the sum of the roots of $\[{x^2} + 4x - 5 = 0\]$

$\[ = \frac{{ - 4}}{1}\]$

$\[ = - 4\]$

Hence, the sum of the roots is $-4$.